May 2023 1 19 Report
17. К реакциям обмена относится: A) 6HCI +2Al = 2AlCl2 + 3H2; B) CuO + H2SO4 = CuSO4 + H2O; Б) Na2O + H2O = 2NaOH: Г) Zn + 2HCl = ZnCl2 + H2;​
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